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(No Model.) l

J. H. HUBER.

BEAMER.

No. 248,885. Patented Sept. 13,1881.

jy@ w N. PETERS` Phclu .nhognphen Washingkn. D. C.

UNrrnD STATES PATENT OFFICE.

JOSEPH H. HUBER, OF LANCASTER, PENNSYLVANIA, ASSIGNOR TO JOHN D. SKILES AND JACOB HALBAOH, BOTH OF SAME PLACE.

REAMER.

SPECIFICATION forming part of Letters Patent No. 246,885, dated September 13, 1881.

Application filed July 22, 1881. (No model.)

To all whom it may concern:

Be it known that I, JOSEPH H. HUBER., a citi- Zen of the United States ofAmerica, residing at Lancaster, in the county of Lancaster and State of Pennsylvania, have invented certain new and useful .Improvements in Beamers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to ro which it appertains to make and use the same,

reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

i 5 This invention relates to reaniers having detachable blades, and especially to such as are employed for reamin g out carriage-hubs, and for similar purposes.

The nature of said invention consists in combining with a slotted core or tubular stock a set of blades movable in and out through the slots thereof, and a pair of expanding devices which work into the ends of the stock or core and bear against the inner corners ot' the 2 5 blades, so as to lock them in position for reaming.

It also consists in constructing the stock in longitudinal sections, which ht together and are clamped by nuts, the tubular stock thus 3o formed being internally screw-threaded at the ends, and combining therewith the aforesaid blades and the expanding devices, the latter being conical-pointed screws, which are turned into the tubular ends of the stock until their 3 5 points bea-r against inclines at the inner corners of the blades, and hold the latter in position for reaming.

In the accompanying drawings, Figure 1 represents a perspective view of my reamer complete. Fig. 2 represents a detail view of the sections of the stock. Fig. 3 represents adetail view of two of the blades and the expandin g-screws inposition for clamping said blades, and Fig. 4t represents a cross-section.

The saine letters indicate the saine parts in the several figures.

A designates the tapering tubular stock of the rea-mer, which is constructed with longitudinal slots ct a, extending nearly, though not quite, from end to end of said stock. Each of 5o these slots receives a blade, B, which has terminal extensions b b of its rear part, which, by bearing against the metal of the stock bevond the ends of the slots, prevent said blade from beingforced out of the stock by the press- 5 5 ure of the expanding orclamping screws, hereinafter described. ThesebladesBin thereamer shown are four in number, but, ofcourse, more of them lnay be used, and their shape maybe varied as desired. At the rear or inner cor- 6o ners of said blades they are provided withinclined faces B B', which areadapted to receive the oblique pressure of conical points C of screws C C, one of which screws into each end of said tubular stock, said screws being substantially the same in construction, except that one is preferably larger than the other. The said stock A is screw-threaded, both externally and internally, `at each end, being formed with cylindrical terminal extensions 7o A2 A2, in which the screw-threads are made. It is constructed of two longitudinal sections, A A', which are held together by nuts ASA, which are turned home on the external screwthreads above mentioned. One of these nuts, A3, is shown as much larger than the other; also, nut A4 is cylindrical externally,lwhilenut A3 is prismatic externally, and has a square iiange or shoulder, which abuts against a similar ange or shoulder ou the stock. The va- 8o rious parts of the reamer may, however, be considerably modified, so as to suit the work for which it is required, or the fancy of the owner, without departing from the spirit of my invention.

When the blades B and sectionsA are put in place the nuts A3 A1 are screwed home on the stock to hold said sections together, and the screws Care screwed into the ends of said stock until their smooth tapering ends or 9o Vpoints C', bearing against the inclines b of the blades, force said blades outward and clamp the extensions b of said blades against the inside of the tubular stock. The tool is thenin condition for reaming.

Whenever a blade is worn out, or the tool needs cleaning, the nuts are turned off and i the screws and blades taken out.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In combination with a tubular stock having internally screw-threaded ends, a set of blades protruding1 through slots in said stock and beveled at their inner corners, and the screws C C, unconnected wit-h one another, working through the internally-threaded,ends of said stock, and provided with conical point-s C', which bear against the beveled parts of said blades and clamp the latter in position for operation.

2. In combination with a slotted sectional stock and nuts which clamp its sections together, a set of blades protruding through slots in said stock and beveled at their inner corners, and the screWsC C, unconnected with one another, working through the internallythreaded ends of said stock, and provided with conical points C', which bear against the beveled parts of said blades and clamp the latter in position for operation.

In testimony whereof I aix my signature in presence of two Witnesses.

JOSEPH H. HUBER.

Witnesses:

Fs. L. HERR, ALLAN A. HERR. 

